Yamaha Midrange Family
by Capt. Ted Lund
Spring will be here before you know it, and the Yamaha mid-range of reliable four-stroke power is ready to help get your family and friends on the water. From the diminutive F25 to the powerhouse F90, Yamaha’s midrange motors offer the perfect horsepower in 2-, 3- and 4-cylinder versions for everything from deep-V aluminum boats to small pontoon boats and center console skiffs.
Each member of Yamaha’s midrange family is unique, giving boaters a wide array of reliable power to choose from, no matter what the application.
F90
This bread-and-butter engine features a 16-valve, double overhead camshaft (DOHC) design 
offering incredible acceleration, and Precision Multi-Point Fuel Injection for reliable starts and outstanding fuel efficiency. The F90 is the only Yamaha midrange motor offering an optional 25-inch shaft — perfect for saltwater installations on flats, skiffs and smaller bay boats.
F75
The F75 features a 16-valve DOHC (Double Overhead Camshaft) design and Precision Multi-Point Fuel Injection for outstanding acceleration and efficiency. The F75 offers many of the same advantages as the F90, in a lower horsepower and with a standard 20-inch shaft, making it a great choice for lightweight fishing boats, pontoons and fiberglass boats..
F70
The newest addition to the midrange family, the F70 weighs in at a best-in-class 80 pounds less than its four-stroke competitors. This 16-valve SOHC (Single Overhead Camshaft) midrange four-stroke also boasts the greatest power-to-weight ratio in its class making it ideal for micro skiff installations.. In addition, the F70 is Command Link® and YCOP® compatible.
F50/F60
These SOHC midranges feature Precision Multi-Point Fuel injection,with quick starts, superior performance and maximum efficiency. You won’t find a better addition to your bass or aluminum fishing boat thanks to their multi-function tiller handle.
F40
This versatile four stroke blends power and fuel efficiency with quiet performance and quick starts making it perfect for small skiffs, jonboats, inflatables and smaller pontoon boats.
F30
Boasting impressive power and superb four-stroke performance, the F30 tips the scales at 214 pounds and is perfect for aluminum fishing boats and inflatables.
F25
This midrange workhorse offers responsive power and solid fuel efficiency in a compact package as well as smart engineering conveniences like the new Nitro Assist Tilt allowing for effortless tilt on both electric and manual start tiller models. It also employs Yamaha’s PrimeStart™ system for reliable, turnkey starts in extreme hot or cold conditions. Available with a 20-inch shaft (standard on all Yamaha midranges), or a 15-inch shaft for skinnier water, it’s great for jonboats, inflatables and micro skiffs.
Like all Yamaha outboards, members of the midrange family are covered by Yamaha’s industry-leading warranty program, offering three years of limited warranty coverage for recreational and Government users and one year for commercial applications. For more information on Yamaha midrange outboards, to watch the introductory video or to view the rest of the 2015 Yamaha lineup, visit www.yamahaoutboards.com.
Original Source: Sportsmans Lifestyle.com